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Re: Vacuum statistics

Andrei Zubkov <zubkov@moonset.ru>

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From: Andrei Zubkov <zubkov@moonset.ru>
To: Alena Rybakina <lena.ribackina@yandex.ru>
Cc: Andrey Borodin <x4mmm@yandex-team.ru>, Andrei Lepikhov <lepihov@gmail.com>, pgsql-hackers <pgsql-hackers@postgresql.org>, Alexander Korotkov <aekorotkov@gmail.com>, Amit Kapila <amit.kapila16@gmail.com>, Jim Nasby <jnasby@upgrade.com>, Bertrand Drouvot <bertranddrouvot.pg@gmail.com>, Kirill Reshke <reshkekirill@gmail.com>, Masahiko Sawada <sawada.mshk@gmail.com>, Melanie Plageman <melanieplageman@gmail.com>, jian he <jian.universality@gmail.com>, Sami Imseih <samimseih@gmail.com>, vignesh C <vignesh21@gmail.com>, Ilia Evdokimov <ilya.evdokimov@tantorlabs.com>
Date: 2026-03-17T15:27:00Z
Lists: pgsql-hackers 
Alena Rybakina <lena.ribackina@yandex.ru> writes:

Hi, Alena!

I have some thoughts about your descriptions in the docs (V34). It looks
clearer now, but in seems to me it still contains some inaccuracy..

1. Naming: The meaning of 'visible/frozen_pages_cleared' seems to me as
cleared pages rather then cleared marks... Maybe it should be
'visible_page_marks_cleared'?

2. Mention of a <command>VACUUM</command> in the docs may be understood
as related to manual VACUUM command only. However, autovacuum is
accounted as well.. I think we can use just term 'vacuum' here as a
facility rather than command.

--
regards, Andrei Zubkov
Postgres Professional

Commits

Same data as JSON: GET /api/v1/messages/:b64id/commits the thread's linked commits as JSON, with link sources. API reference →

  1. Add relallfrozen to pg_class

  2. Move wal_buffers_full from PgStat_PendingWalStats to WalUsage